Pen



FIG. 1 is a perspective view of the pen showing my new design.

FIG. 2 is a front elevational view of FIG. 1.

FIG. 3 is a right side elevational view of FIG. 1, the left side elevational view being a mirror image thereof.

FIG. 4 is a rear elevational view of FIG. 1.

FIG. 5 is a top plan view of FIG. 1.

FIG. 6 is a bottom plan view of FIG. 1; and,

FIG. 7 is an exploded perspective view of FIG. 1.

The broken lines in FIGS. 1-4, 6, and 7 are included for the purpose of showing portions of the pen that form no part of the claimed design. 

The ornamental design for a pen, as shown and described. 